ActivEpi is a complete multimedia introduction to epidemiology. It mixes a full array of media to motivate, explain, visualize and apply epidemiologic concepts. Features include video to instill real-world motivation, narrated expositions to teach the concepts using highquality audio synchronized with text, pictures and animations, quizzes to provide self-evaluation of basic terms and concepts and a Data Desk to provide practice applying the methods learned to real data. ActivEpi includes over 50 hours of content via more than 250 launchable activities and exercises.